What does r² really tell us?

We’ll share a classroom-ready investigation with an engaging context that connects one-variable and two-variable quantitative data analysis on the calculator while answering this question.

The TI-84 Plus CE graphing calculator offers students several helpful menu options for calculating probabilities involving normal and binomial random variables. What work do students need to show when using these calculator functions on free-response questions? We’ll examine a multipart question that addresses this issue with a real-world scenario.

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